Student Research Reports

View Research Report

This research aimed to: (1) evaluate the carbon dioxide emissions from leftover food consumed by students at Phakmai Wittayanukul School; (2) assess the carbon sequestration capacity and identify tree species around the school canteen; and (3) compare the emissions from leftover food with the trees' sequestration capacity.of trees around the canteen. The research was conducted using a field survey method. Tree species around the canteen and school buildings were surveyed. Tree height was measured using the GLOBE Observer application, and trunk circumference was measured at a height of 150 centimeters above ground level using a measuring tape. The collected data were recorded and used to calculate carbon sequestration using the LESS program, along with identifying tree species. In addition, leftover food was weighed daily throughout the 2025 academic year, and the data were used to calculate carbon dioxide emissions in terms of carbon footprint. The results showed that the average amount of leftover food generated by students during the 2025 academic year was 2 kilograms per day, resulting in carbon dioxide emissions of 5 CO2e(kg)per day. A survey of 42 trees around the canteen and school buildings revealed a total carbon sequestration capacity of 32,886.59 CO2e(kg)The three most common tree species were Bullet Wood (Mimusops elengi) with 10 trees, followed by Pine trees with 7 trees, and Ironwood (Cassia siamea) with 6 trees. When comparing the total carbon dioxide emissions from leftover food during the 2025 academic year (880 CO2e(kg)with the carbon sequestration capacity of the 42 trees around the canteen (32,886.59 CO2e(kg)it was found that the trees were able to sequester a significantly greatera mount of carbon dioxide than that produced from leftover food.